LM339DRE4

Product Overview

Category: Integrated Circuits (ICs)

Use: LM339DRE4 is a quad differential comparator designed for use in industrial, automotive, and commercial applications. It is commonly used to compare voltages and determine the difference between two input signals.

Characteristics: - Low power consumption - Wide supply voltage range - High input impedance - Open collector outputs - Fast response time

Package: The LM339DRE4 is available in an SOIC-14 package, which stands for Small Outline Integrated Circuit. This package provides a compact and space-saving solution for circuit designs.

Essence: The essence of LM339DRE4 lies in its ability to accurately compare voltages and provide a digital output based on the comparison result.

Packaging/Quantity: The LM339DRE4 is typically sold in reels containing 2500 units per reel.

Specifications

• Supply Voltage Range: 2V to 36V
• Input Offset Voltage: ±1mV
• Input Bias Current: ±25nA
• Response Time: 1.3μs
• Output Current: 16mA
• Operating Temperature Range: -40°C to +125°C

Pin Configuration

The LM339DRE4 has a total of 14 pins, arranged as follows:

__ __ VCC| 1 14 |GND IN1-| 2 13 |-OUT1 IN1+| 3 12 |-OUT2 IN2-| 4 11 |-OUT3 IN2+| 5 10 |-OUT4 IN3-| 6 9 |-IN4+ IN3+| 7 8 |-IN4- ‾‾ ‾‾

Functional Features

• Quad differential comparator with open collector outputs
• Wide supply voltage range allows for versatile applications
• High input impedance minimizes loading effects on the input signals
• Fast response time enables real-time signal comparison
• Low power consumption makes it suitable for battery-powered devices

Advantages and Disadvantages

Advantages: - Versatile and widely used in various applications - Accurate voltage comparison with low offset voltage - Compact package size for space-constrained designs - Open collector outputs provide flexibility in interfacing with other circuitry

Disadvantages: - Limited output current capability - Requires external pull-up resistors for proper output operation - Not suitable for high-frequency applications due to slower response time compared to specialized comparators

Working Principles

The LM339DRE4 works based on the principle of comparing voltages at its input pins. It compares the voltage at the non-inverting input (IN+) with the voltage at the inverting input (IN-) and produces a digital output based on the comparison result. The output is driven to a low state when the voltage at IN+ is higher than the voltage at IN-, and it is driven to a high impedance state when the voltage at IN- is higher than the voltage at IN+.

Detailed Application Field Plans

The LM339DRE4 finds application in various fields, including:

1. Industrial Control Systems: Used for monitoring and controlling processes in industrial automation systems.
2. Automotive Electronics: Employed in automotive systems for functions such as overvoltage protection, level detection, and fault detection.
3. Battery Management Systems: Utilized in battery management circuits to monitor battery voltage levels and trigger appropriate actions.
4. Power Supply Monitoring: Used to compare reference voltages and provide feedback for regulating power supply voltages.
5. Signal Conditioning Circuits: Employed in signal conditioning circuits to compare input signals and generate digital outputs based on the comparison results.

Detailed and Complete Alternative Models

1. LM339N: Similar to LM339DRE4 but available in a DIP-14 package.
2. LM2901: Quad differential comparator with similar specifications and features.
3. LM311: Single differential comparator with higher speed and wider supply voltage range.

These alternative models can be considered depending on specific application requirements and package preferences.

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